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Showing results for tags 'lifter tick'.
Found 4 results
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I believe that's a rod knock. But a friend told me it was a lifter tick and now I am confused which one is it. What you guys think? My 2014 Silverado 5.3 z71 20210120_194156_1.mp4 -
Normal? LOL Has 8 new lifters and newer number vacuum pump. I have purchased a new high pressure fuel pump and will replace myself. Dealers (GMC of Murfreesboro and Wilson GMC) says its normal. Hope it fixes it...
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So I have had my truck into Dealer on multiple occasions for what sounded like a lifter tick. This ticking noise was loudest in the morning first thing when starting engine. With the hood open it sounds like a lifter sticking and coming from under valve cover. You also can hear it through the drivers side wheel opening. Since the dealer has recently replaced all lifters I decided to go ahead and replace the vacuum pump. I purchased one from Amazon for $128.83 and a Lisle Stretch belt tool 59370 for $15.00. ACDelco 12669488 GM Original Equipment Vacuum Pump and Lisle 59370 Stretch Belt Tool Upon start-up the loud ticking noise is gone. I can still hear the injector noise but it is not very loud compared to this noise I have been chasing for some time now. We will see how long this new designed pump lasts. It does not look as beefy as the original but if there is no noise I will be very happy.
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Here's an issue that has me stumped. 2000 Silverado, 4.3, 200K mi. Truck runs great, no oil consumption. I have a very random oil pressure fluctuation, normally I have 40 psi (+ or - 5psi) pretty steady, not affected by rpm or temp. about 20,000 mi. ago I started getting a lifter tick on start up accompanied by crazy fluctuation in oil pressure relative to rpm ( 15psi at idle and 60+ at 3500) It will do this for maybe a week and then stop....no tick and steady oil pressure again. Truck has always had regular oil changes with quality oil (dino) and a Wix filter, I've tried Lucas oil additive, Marvel, different viscosities between 10-30 and 15-40 nothing makes it worse or better. Seems to go away by itself and then return completely at random. Sometimes it will go 5k with no issues, other times maybe 2k. Not affected by oil changes or mileage...just comes and goes. Always lifter tick and oil fluctuation....tick goes away and so does crazy oil pressure. WTF is going on?
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